Amazing product for suede, nubuck, etc. sensitive leathers.
After use, the surface does not change color at all, does not darken, does not leave stains.
It becomes smoother (you can feel it by touch) but it does not "stick", does not hold dust, and dirt is easily cleaned.
Of course, it does not have the same durability as regular silicone spray (which, however, darkens the color of the leather and sticks to the touch).